erm, firstly so?
secondly you clearly had the boost so why didnt you help him, oh wait i forgot that you dont like casting on warriors.
Thirdly, xinraes is crap for staying alive vs warriors... as soon as warding and resilient is rupted getting deep wound will mean you die.
If he was WoR then he could have removed the deep wound giving him more heal on wielder's boon. However it was your fault as well as good timing from the warrior
that killed him.